75 wells across 44 active operators, with 0 drilling permits filed in the last 24 months.
Refreshed monthly from BOGC well-header records. Data current as of 2026-08-23.
Quick answer: The Gammon formation in Montana has 75 wells on record across 44 active operators, with 0 drilling permits filed in the last 24 months (as of 2026-08-23). Its most active operators by well count are Armstrong Operating, Ohio Oil Company, Placid Oil Company, Boekel R G and McDonald Etal. Compiled from Montana Board of Oil and Gas Conservation (BOGC) well-header records, refreshed monthly.
The operators with the most well counts targeting the Gammon formation in Montana:
| # | Operator | Wells in Gammon |
|---|---|---|
| 1 | Armstrong Operating | 8 |
| 2 | Ohio Oil Company | 4 |
| 3 | Placid Oil Company | 4 |
| 4 | Boekel R G | 3 |
| 5 | Mcdonald Etal | 3 |
| 6 | Shell Oil Company | 3 |
| 7 | Hlm Drilling Company | 3 |
| 8 | Bowers Oil & Gas | 2 |
| 9 | Carter Oil Company | 2 |
| 10 | Blair Arden | 2 |
The Montana counties with the most Gammon activity:
Carter, Fallon
The Gammon is one of Montana's active oil and gas plays, with 75 wells on file across 44 distinct operators of record. Operators have filed 0 drilling permits targeting the Gammon in the last 24 months — a measure of how active the play is right now versus its historical baseline.
For mineral owners with interests in Carter, Fallon, knowing whether your tract sits within an active Gammon footprint is a foundational valuation question. Active formations with consistent permit flow command premium pricing; legacy formations with steady but declining production are valued differently.
See all Montana oil & gas formations & plays · Download the Montana formations dataset (CSV)
75 wells target the Gammon in Montana, worked by 44 active operators, per BOGC well-header records (as of 2026-08-23).
By well count, the most active Gammon operators in Montana are Armstrong Operating, Ohio Oil Company, Placid Oil Company, Boekel R G and McDonald Etal. The full ranking is in the table on this page.
Operators filed 0 drilling permits targeting the Gammon in the last 24 months — a live measure of current activity, per BOGC records.
Operators filed 0 new drilling permits targeting the Gammon in Montana over the last 24 months. New permits and spuds are the clearest signal of active Gammon drilling, per BOGC records (as of 2026-08-23).
Gammon activity in Montana currently spans 75 wells on record and 44 active operators, led by Armstrong Operating, Ohio Oil Company, Placid Oil Company, Boekel R G and McDonald Etal, with 0 drilling permits filed in the last 24 months — refreshed monthly from Montana Board of Oil and Gas Conservation (BOGC) well-header records (as of 2026-08-23).
The most active Gammon counties in Montana are Carter, Fallon.
Value depends on your net mineral acres or royalty decimal, the operator, the remaining drilling locations, and current oil and gas prices. Buckhead Energy checks your tract against current Gammon well and permit data and puts a free, no-obligation written offer in writing — this page is informational only, not a valuation.
Cite this dataset
Permanently archived and citable via a DOI on Zenodo (CERN), under a CC BY 4.0 license. DOI: 10.5281/zenodo.21442884 · View on Zenodo
License & attribution: This data is licensed CC BY 4.0. You are free to share and adapt it, including commercially, provided you credit “Buckhead Energy” and link back to this page or the DOI above.
Get a free written offer based on your specific tract, operator, and the current Gammon activity in your area.
Get Your Free Mineral ValuationTop Montana Operators Leaderboard
US Mineral Market Activity Index (all 11 states ranked 0–100)
US Mineral & Drilling Activity Index (national rollup)
Texas Industry Snapshot (largest producing state)
Largest US Operators — National Leaderboard
Browse the Full Operator Directory
Live Oil & Gas Prices (WTI + Henry Hub)
Sell Your Montana Mineral Rights
Formation: Gammon
State: Montana
Total wells: 75
Active operators: 44
Permits 24mo: 0
Last refresh: 2026-08-23